Why doesn't the new 4100 model have a regular plug ? why on gods green earth did they cheap out and put a usb plug in there ??

According to the review in WireCutter (Sept 2022), you can contact SonicCare and receive a free plug adapter. I've just ordered the 4100 on Amazon. I don't have the serial number yet, because the product doesn't arrive until tomorrow, but SonicCare customer service just told me that they would send the free plug adapter once I provide the model number and serial number to them. They confirmed there is no charnge. It will take 7-10 days to receive the plug adapter once I am able to provide them with the serial number. I'll do all of that after the product arrives tomorrow.

Does anybody make a single speed electric toothbrush? I'm so tired of cycling through the speeds

Cycling is the most effective way to brush each quadrant sufficiently.

What is the purpose of having two intensity modes? How do you know when you should use one or the other?

if you have more sensitive teeth and gums you can use the softer mode

What do the green and yellow lights mean? what about the beeping noise after the 2 minute brush? I thought low battery but is it replacement head?

Hi! When the brush head replacement reminder light of Philips Sonicare Toothbrush HX3681/24 lights up amber, kindly replace your brush head.

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4100 Electric Toothbrush, Rechargeable Electric Toothbrush With Pressure Sensor, Black Hx3681/24 - Adult, 244.944 Gram

4100 Electric Toothbrush, Rechargeable Electric Toothbrush With Pressure Sensor, Black Hx3681/24 - Adult, 244.944 Gram

Product ID: 553634159

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Details

Brand
Philips
Age Range (Description)
Adult
Special Feature
Brushing Timer
Power Source
Battery
Item Firmness Description
Soft
Colour
Black

⚡2-week battery life

🔔Brush head replacement reminder

🦷5x plaque removal

Description

🖤 Elevate your smile game with tech that cares as much as you do.

NEVER MISS A BEAT - Brush head replacement reminder keeps your clean game consistently on point.
GENTLE YET POWERFUL - Pressure sensor + 2 intensity settings protect sensitive gums from overbrushing.
PLAQUE WHAT PLAQUE - Removes up to 5x more plaque than manual brushes for a dentist-clean feel every day.
CHARGE LESS SMILE MORE - One full charge lasts 2 weeks—perfect for busy pros on the go.
SMART BRUSHING SMARTER YOU - 2-minute SmarTimer with QuadPacer ensures you hit the dentist-recommended brushing time.

The Philips Sonicare 4100 Rechargeable Electric Toothbrush offers 5x better plaque removal than manual brushes, featuring a pressure sensor and dual intensity modes to protect sensitive gums. Its 2-minute SmarTimer with QuadPacer ensures optimal brushing time, while a brush head replacement reminder and a 2-week battery life with USB charging make it a reliable, travel-friendly oral care essential.

Specifications

Manufacturer	Philips Sonicare
Country of Origin	USA
Item model number	HX3681/24
Product Dimensions	6.3 x 10.9 x 22 cm; 244.94 g
ASIN	B09LD7WRVS

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